secondary tin再生锡
secondaryadj.次要的;从属的;中等教育的n.副手;次要位置
secondary air flow第二股气流
secondary thrombus[医] 继发血栓
secondary stimulus再刺激
secondary epilepsy继发性癫痫
secondary fumarole次生喷气孔
secondary focusing次级聚焦
secondary abutment次桥基
secondary material二次材料
secondary evidence间接证据
Secondary Hospital